Lubricating system for engines.



LUERPJVYNG SYSTEM FR ENGNES,

Patented Mai. 22, 1910.

2 SHEETS-SEEET 1.

A. J. LIBERTY.

LUBRIGATING SYSTEM P011 ENGINES.

APPLIGATiGN FILED FEE, 6, 1909 Patented Mar. 22, 1910.

2 SHEETS-SHEET 2.

UNITED STATES LUBRICATING SYSTEM FQB ENGINES.

Specification at' Letters Patent.

Patented Mn r. 1910.

Application filed February 6, 1909. Serial No. 476.335.

'lo all 1li/mm 'it may rfi/awa:

Be, it known that l.` .\.\"nu.\i; J. Innrzu'rr, a subject ot' Great Britain. residing' at Dctroit, county of Wayne. I*tate of Michigan,

have invented a certain new and useful 1n1 provement in Lubricatingl Systems for Enrines, and declare the following to be a ull, clear, and exact description of the sanne', such as will enable others skilled in the art to which it ertains to malte and use the salue, referencelieing;r had to the accom )any ing drawings, which forni a part. o this,`

specification.

My invention relates to means for lubricating the cylinder and crank-pin of a twoc cle engine shown in the acc'mnpaerying rawinfsand more particularly int out in the ollowin siocitication an( claims.

` The object ot is invention is to provide means whereby a fixed amount of lubricant may bc fed 'regularly to the cylinder and crank-pin by means which will insure the l delivery of oil to the parts under all workinconditions. r

eferring to the drawings :-1*` igure 1x is a slde elevation of a portion of a two -cyclc engine withpurts broken away and in sec-V tion, disclosing the piston near the end of lts down stroke,.-the crank case heing under compression. The dotted llines indicate the position of the' piston at. the'dower limit. oi 'isAi-roke. the wrist-pm orifice,V having passed Vthe orifice through the. wall ot' the c linder. Fig. L is a similar Vview slnpving' t le piston al tle-lirnit of its u1l ward trav l.

In carryingr out my invention, a suita 4le olfcup is provided with iping leading"to a channel'through the welll of the cylinder leading from the oil-cup to the cran ease and near the -latter is a similar check valve'.y opens and closes as the@` which alternatelv piston reciprocatcs.

Referring now to the letters of Areference placed upon the drawings: A represents *the cylinder of a two-cycle enmfne; B its crankAeasej C the cranlr shaft.

D is the piston and E is the wrist-pin having a longitudinal bore e for the passage of oil, also u peripheral groove c in communication therewith wherein' the wrist-pin is lubricated.

l" is a 'connecting rod also provided with a longitudinal bore con'nnunicuting with the passage c in the wrist-pin.

e is a Bahbitt-nietal liningr between thc \vri.- tpin and the huh of the connecting rod I".

i ("t is a crank- )in and r: is a Bahhitt|nctal linin; r hetween tlie lower hul) oil the connect ingr rod 'F and the crank-pin.

i is a hall check valve lodged in a suitable valve cage (l'and supported in the connecting! rod F in line with the longitudinal hure y is a criss-pin to lilnit the downward movement of the hall. H isv an oil cup and la its sight feed glass. f il'. is a pi e leading;r from the oil cu u to ya T-fitling with. which il is joinedI l1)lr a union 1.---one arm ol' the fitting l llcing supported in the wall of thc cylinder n. is a passage or orifice in the wall of the cylinder through which oil passes to the interior of the cylinder or to the orifice in the cranlepin when the latter registers with the sante. as shown in Fig'. l of the dra ingS.

J a pipel leading from the fitting T to the'crank ease B.

l; is a clinch' "valve and K' lhs cage ysupported in the wall of the crank cawnutl in line with the pipe ,l with which il is connected; f w

L' xs a pm to limit the movement nl thc /yalve K.

i Hafving indicatedY the. several parts hy and also through the crunk case. The wrtstpin is formed with a centralv bore which conlreference letters. the operation of my i|nproved lubricating system will bereadilv understood.

The clip H bcingfilled with oil. ou the downward movement of the, piston. the check valve .G will he forced to its seat due to the compression in the crank case while the check valve K will be forced from its seat, due to the same cause. The pressure created by the downward movement in t-he crank case up through the pipe J will force theoil fed through thc'oil cup, out through the tittin- I, the channel4: and into the "c linder, lubricating the cylinder' and piston. l Then the longitudinal bore e in the'wristpin registers with the passage a. in the c vlinder, the oilwill be forced through the longitudlnalrbore e and into the longitudinal bore or passage f of the connecting rod Ff the valw (l supporting the column of oil in the connecting rod until thc piston has renrhcfl the lower limit of its stroke. On tlereturn stroke of the piston the valve (l will drop from its seatfn--as it will then bc rcliewll oi' the pressure which held it'. lo its sea! on llc flown stroken-the oil in the conne-cling rml will thus be released to lnhri cate the craint-pin, it the moment the check valve tl lli-ops from its seat, the cheek valve l will seat-diie to the upward movement of the piston creating aJ pnrtial vncnnm t sind relwvinff the pressure in the crank casta-Has will be readily understood. The closing' of the check vnlve K serves to prevent the 'lwivcrjx of oil through the pipe .l to the crank case and when said valve is open. the pressure created in the crankcasc by the leiunn'nrd movement of the piston Serves to prevent the delivery of oil through said pipe to the crank case. lt, will thus be seen tlm? while the pipo fl communicates dircctlv esiti; the oil paf-sage, no oil will he delivered through .said pipe to the crunk case and thereby wasted. The wrishpin l'l is lubricated as the piston passes the channel e,- V-tlic oil entering between the periphery of the` wrist-pin and surrounding wall of the piston, it is also fed ont through the peripheral groove c in the wrist-pin,

lt` will non be seen that us thc piston moves downward the check valve Gwill be seated by the pressure in the crank case enteringr around the. loosel littin sleeve of the connecting rod on the cran -pin, and, lwnrin r npon the underside ofthe valve, will hold it to its seat so that the oil which enters` the connecting rod will remain therein I lntil the piston starts on its upward stroke: whereupon he check valve (l will drop from its sont rele-using the oil in the connecting rod and therein' lubricating the crank-nin, as before explnined.

Having thus described my invention, what. I claim 1s:-- l

1. In e. lubricatin system for engines, n cylinder provided wlth un oil inlet, a crunk case having e valve o ening, a piston whose y head'is o-eri1b1e in t e cylinder and Whose4 piston ro is operable in the criink case, a Wrist pin upon which the head 1s mounted the Wrist pin nd piston rod being provide with communicating bores, the bore of the piston rod leading to the crank pin of sind rod, a valve in the rod in line with the bore of the latter, an oil receptacle, a, communieating passage between said receptacle and the o1! inlet of the cylinder, and n communb `eating passage between the vulved opening of the crank case and the passage between. the receptacle and the oil inlet, whereb movement of the piston in one direction wi l canse` the bore of the wrist pin to pass said oil inlet and receive oil which subsequently enters the hort` of' thtl piston rod. said valve of the piston rod being operable to close during said movement of th(` piston lo confine the oil in the piston rod. the valve ot' said vnlvetl opening being opened daring said movement of the piston to insure. feeding of the oil to the wrist pin, the vulve of the vnlvcd opening closingr and the vulve ot' the piston rod opcningnpon reverse movenient of the piston to arrest the feed of the oil und pcrnnt discharge of the o il from the piston rod only during said reverse movement of thc iston.

2. In a ln ricating system for engines, n cylinder, :i crunk case, n piston whose head is operable in the cylinder and whose piston rod is ofierable in t le crunk cese, a wrist pin upon` w ich said hend is mounted, the wrist pm being bored and the piston rod also having n bore communicating with the bore of the wrist pin, a crank pin upon which the `piston rod is mounted, thc bore of the piston rod leading: to the wrist pin, an oil receptncle, a communication between the oil receiitacle and the interior `of the cylinder, n vn ved passage between the crank case and the passage between the oil receptacle and cylinder, und n valve in the piston rod in line with the bore of the latter, wher-eb movement of the iston in one direction wi l el'ect nfeed of t e oil from the receptacle to the wrist pin and subsequently to the bore of thc piston rod wherein the oil is confined and discharged therefrom only upon the reverse stroke of the piston.

3. In a lubricating system for engines, a cylinder, a crank case, n wrist pin, n crank pin. :l-lpiston whose head is operable in the cylinder and'whose iiston rod is operable in said crank ense and which has connection with said wrist und rrank'pins, the wrist pin being bored and the piston rod also hav ing n bore communicating with the bore ofV the wrist pin and leading` to the crank pin, n valve in the piston rod in line with the bore of the latter, an oil receptacle, a communication between the oil receptacle and the interior of the cylinder, n vnlved passage between the crank case and the pussage between the oil receptacle and cylinder, and a viilve in the piston rod in line `with the bore of `the latter whereby movem'nt of the iston in one direction will effect a feed o? the oil from the receptacle to the wri pin and subsequently to the bore of the piston rod wherein the oil is confined and discharged therefrom only upon opening of 4the iston rod valve incident to the reverse stro e of the piston.

4. In n lubricating system for engines, a cylinder; a crank case, the cylinder and the crank case each having an opening, nn oil receptacle having communication with the opening of the cylinder, fl` bored connection between the opening of the crank case and les the roiineeliou existingr between said rei-eptznzle and the opening of the cylinder, :i piston in the cylinder including a head, a bored wrist pin upon which the head of the piston is niounted and also including a bored pis ton rod and the Tank pin upon which the piston rod is mounted` the bore ot' the pie ton rod eonimunicating with the hore of the wrist pin and leading to the crank piu. :i valve in the pieton rod in line with the'hoi'e `of the hitter, whereby on movement ot' the piston in one direction the oil of Said rerfepmele ivill enter the Wrist pin and pass into the hol-e of the piston rod, the valve ot' the piston rod being closed hy pressure in the crank ease during' the movement of the piston in said one direction and opening only when the present-e is relieved incident to the nioveiiieni ot' the piston in the opposite direetion zind thereby permit of the oil in the hore ot' the piston rod to he Supplied to the Crank pin of the piston rod only when Said piston movi-n in Said opposite direotiol'h 5. In zi lubricating System for engigines.` a cylinder provided with an oil inlet. n Crank rase having n valved opening. :i Wrist pin, a l

crank pin` a piston operable in the tvlinder and havingr operative connection with the wrift and Crank pins, the Wrist pin and pie'- ton 'rod being provided with communicating hores. the hoi-e of the pieton rod leading to the erank pin ot' Said rod. :i valve in the piston rod in line with the bore of the lat-- ter, a T-ehiiped fittingI Secured to the eylinder and bored for eommunieation with the oil inlet. an oil receptacle, a )tissage between the oil ieeepteiele and the :ind a passage lietu'een the T-sliaped fitting und the erauhy rod nlm heilig' liored \\itli its bore eoniniunieuting with the llore ot the friet pin. ineiiii I when-hy oil anni' he anp plied to the llore ot the ivi-ist piu during' one iiiovenient of thtl piston sind permit it to puse. into the liore of the piatoii rod :ind

`eontined therein during' inoyenient ot' the piston in aid one diret-tion. iin-:ins whereliy eoniprewioii euperiudueed h v `nid uioveiuent, ot' the piston inav effet-t :i i'ioeitive feeding of the oil to the uriet pin` and ineaim whereA hy the oil in the hore of the pieton rod niziv he Supplied to the ernnk piu upon wliieh bore, and the pieton rod having a` bore Coininunieating with the bore of the Wrist pin with the bore of the piston rod leading to the erotik pin upon which the piston rod is mounted` means 'whereby upon movement of the pieton in one diieetion oil may he supplied to the ivi'iet'pin and consequently also to the bore of' the piston rod', means wlierehy on :i reverse movement of the pieton the feed of oil to the ivi-iet pin is Stopped and menne ivlierelivY the oil of the piston rod may he Supplied without Waste to the eranl pin ol." the piston rod only at the time Said vaeiiiiin is created.

-Shaped Fitting, i

thereto. :i eranh pin. n pieton mounted upon and said valved opening ot' the erank rane. 1

Said fitting being further bored to establish eoinniunieiition between the Firet mentioned l'ioie and said passage between the fitting and valved opening. whereby movement of the piston in one direetion will enlise the!` when the pieton is moved in one direction.

bore of the Wrist pin to pass the. said oil inlet and receive oil which pumas: into theI bore I i eoinhustion engines. a erank pin. :i hnred rod. and the valve of aid valved opening being opened to insure the feed ot' the oil through the Wrist pin duringI iui-li movement of the pieton. the valve in the valved openingi elosing :ind the valve in the pieton rod opening upon reverse movement ot' the piston to arreet theft-ed o'tiiil into the wrist pin and permit the (inclini-ge of the oil From the pistou rod to tlieeraiilt pin onlyI during ymid reverse movement ot' the piston.

6. ln a luhrieatin'nr svetein for engines. a ovlinder. a erank ease. :i erank pin. :i wrist pin. a pieton operiitivelv eonueeted to `"aid wrist and rrank pinsl opi-milde in the vlinder :ind hovingr ite pi-ton rod projeetine' into the errinlt rase. the ivi'i-t pin lining lion-d R. Tn a hihriratingtr syetem for engines. :i hored wrist` pin. means for iiitrodiif-innr oil the wrist pin and the Prank pin and having a lioi'ed piston rod whose hoi-e eoininiiiiirate l with the hoie ot the wriet pin and direetly with the erank pin. and :i eheek vnlve located in the liore of the pieton rod adapted to close the piiesage through the pieton iod 9. Tn :i luhrieating ,Q vstein for internal `eoinniunlrxition between the erauk ease and 'feeding means:` adnpted to iiitei'niitteiitlv elose said passage. opening' and eloeing :ilternatelv with the opening and rinsing of the aforesaid r'lieek valu-ie.

l0. ln i1 lulirieating'. s vsteiii of internal eoinlinstion engines. an engine evlinder. :i einnlr enne. :i wref pin. :i ernnlt pin, nieaiiS trank pim :1nd operable in the e-ylindel and' Einweg 1ts wrist pui bored to feceive 011 from ille feeding means.,y the piston rod 0i the piston being bored with its bore comnnlnnfzxting with the bore of the Wrist pin and adapted lo receive oil for deliverance t0 ille crank :un upon which the )iston rod is inonzieal. :1 ehefxlixvnlve loeuiexi e5 the misten rmi to intermittently close the bore 'oi ille piston rod1 :L eommunicating in the borev l pnssz'lge leading from the Crunk Cese lo ille feeding means, and a cheek vulve located in seid passage ada ted to intermittently close 5 the same, one va ve opening and closmg alternately with the opening and closing of the other valve.

1n testimony whereof, l Sign this specification in the resence of two Witnesses.

NTUlNE J. LIBERTY. VitnesseS:

GRACE E. WYNKOQP, SAMUEL E, THOMAS. 

